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ZyAIR G-2000 Plus User’s Guide
Chapter 23 LAN Setup
270
23.4.1  Configuring MAC Address Filter
Your ZyAIR checks the MAC address of the wireless station device against a list of allowed or 
denied MAC addresses. However, intruders could fake allowed MAC addresses so MAC-
based authentication is less secure than EAP authentication. 
Follow the steps below to create the MAC address table on your ZyAIR.
From the main menu, enter 3 to open Menu 3 – LAN Setup.
Key 1 to Key 4
The WEP keys are used to encrypt data. Both the ZyAIR and the wireless sta-
tions must use the same WEP key for data transmission.
If you chose 64-bit WEP in the WEP Encryption field, then enter any 5 ASCII 
characters or 10 hexadecimal characters ("0-9", "A-F"). 
If you chose 128-bit WEP in the WEP Encryption field, then enter 13 ASCII 
characters or 26 hexadecimal characters ("0-9", "A-F").
Note: Enter “0x” before the key to denote a hexadecimal key. 
Don’t enter “0x” before the key to denote an ASCII key
Authen. Method
Press [SPACE BAR] to select AutoOpen System Only or Shared Key Only 
and press [ENTER]. 
This field is N/A if WEP is not activated. 
If WEP encryption is activated, the default setting is Auto
Edit MAC Address 
Filter
See the following section for details on this field.ZyAIR
Edit Roaming 
Configuration
Press [SPACE BAR] to select Yes to enable roaming on the ZyAIR if you have 
two or more ZyAIRs on the same subnet.
Note: All APs on the same subnet and the wireless stations must 
have the same ESSID to allow roaming.
Breathing LED
Select Yes to enable the Breathing LED, also known as the ZyAIR LED.
The blue ZyAIR LED is on when the ZyAIR is on and blinks (or breaths) when 
data is being transmitted to/from its wireless stations. Clear the check box to 
turn this LED off even when the ZyAIR is on and data is being transmitted/
received.
Preamble 
Press [SPACE BAR] to select a preamble type. Choices are LongShort and 
Dynamic. The default setting is Long.
See the section on preamble for more information.
802.11 Mode
Press [SPACE BAR] to select B Only to allow only IEEE 802.11b compliant 
WLAN devices to associate with the ZyAIR.
Select G Only to allow only IEEE 802.11g compliant WLAN devices to 
associate with the ZyAIR.
Select Mixed to allow either IEEE802.11b or IEEE802.11g compliant WLAN 
devices to associate with the ZyAIR. The transmission rate of your ZyAIR might 
be reduced.
When you have completed this menu, press [ENTER] at the prompt “Press ENTER to confirm or ESC 
to cancel” to save your configuration or press [ESC] to cancel and go back to the previous screen.
Table 90   Menu 3.5 Wireless LAN Setup
FIELD
DESCRIPTION